Why would you need to do this? There is no need for the SSD on a SBS IMHO. Anything that is pushing that level of traffic should be broken out to specialized servers and optimized correctly there before you add SSDs for no reason.

How do you figure? That drive's spec is (read) 300/MBs so a RAID1 best case would give you 600MBs, if your interface and controller aren't the bottleneck which I'll wager they are.

I would go at least RAID10 if its production, I really question if RAID1 write performance will meet the IOPs needed by the SBS databases (unless you followed recommendations and moved SQL to a separate box).

How do you figure? That drive's spec is (read) 300/MBs so a RAID1 best case would give you 600MBs, if your interface and controller aren't the bottleneck which I'll wager they are.

I would go at least RAID10 if its production, I really question if RAID1 write performance will meet the IOPs needed by the SBS databases (unless you followed recommendations and moved SQL to a separate box).

How 'small' is small? Generally most work that a server will do isnt thrashing the HDD - a few file transfers, or a couple of database queries...nothing that you'll really notice scorching improvements from. If you're running some 10gigabit ethernet into your sever, and its serving 100 people...then yeah, fast storage is seriously great. (we have 10GbE at work, but the server is seriously slow so requests struggle/time out often)

The reason i very much DONT suggest SSDs for business is because they brick. If i WAS going to use them for business, I would RAID-1 them so when 1 bricks, there isn't any interruption to the server - swap it out and rebuild. Don't say it wont brick...it MIGHT not...but it can, and its not nice to have a business server come down in burning flames. No matter how you look at it, disaster prevention is infinitely better than disaster recovery. Ive reimaged an SBS server before...its slow and painful, and you do lose (a bit) of data between backups.

TLDR: If you MUST use an SSD - Set up disaster mitigation (RAID-1/10/5/6) as well as disaster recovery(image/backup) - one day you'll need it.